﻿namespace Calendar
{
    internal class Program
    {
        static void Main(string[] args)
        {
            DateTime nowday = DateTime.Today;               //今天
            DateTime birth = new DateTime(2003, 1, 25);     //生日
            TimeSpan days = nowday - birth;                 //相减
            Console.WriteLine($"已经活了{days.Days}天");
        }
    }
}